Changing Disk And Directory Caching For Faster Writes - Novell NETWARE 6-DOCUMENTATION Manual

Changing Disk and Directory Caching for Faster Writes

Use this procedure if network users frequently make many small write
requests and the server is slow to respond to the requests.
1
From the MONITOR Available Options, select Server Parameters > File
Caching. For instructions on using MONITOR, see
Utilities Reference.
NOTE:
You can also set file caching parameters with the SET command in
MONITOR.
2
Increase the value of Dirty Disk Cache Delay Time.
This parameter specifies how long the system waits before writing a not-
completely-dirty cache buffer to disk.
If the value is low, the system writes to disk more frequently, but writes
fewer requests each time. If the value is high, the system waits longer
before writing to disk, but executes more write requests with each
operation. A higher value provides greater efficiency in writing to disk.
If the parameter is currently at the default value of 3.3 seconds, try
increasing the value to 7 seconds.
3
Press Esc to return to the list of parameter categories and then select
Directory Caching.
A list of Directory Caching Parameters appears in the upper window.
The scroll thumb to the right indicates that you can use the arrow keys to
scroll the list.
4
Increase the value of Dirty Directory Cache Delay Time.
This parameter specifies how long the system keeps a directory table
write request in memory before writing it to disk.
IMPORTANT:
Increasing the parameter provides slightly faster performance, but
can increase the chance of directory tables becoming corrupted.
If the parameter is currently at the default value of 0.5 second, try
increasing the value to 2 seconds.
5
Increase the value of Maximum Concurrent Directory Cache Writes.
This parameter determines how many write requests from directory cache
buffers are executed at one time. Increasing this value increases the
efficiency of directory cache write requests.
Optimizing the File System Performance
MONITOR in
27